[Correcting previous tip] Technically, this is not the first Del Taco. The first Del Taco opened in Yermo several years earlier than the First Ave. version in Barstow. Because the first closed, this is the oldest remaining and is referred to by corporate as Del Taco #1.

[Matthew Green, 01/16/2010]

First Del Taco

The first of 400 Del Taco Mexican fast-food chains opened here in 1964. In downtown Barstow there's a billboard a block away with an arrow pointing to it that mentions it as the first.